https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What's the most abundant energy source in our solar system? Here's a hint, it's 1 million times bigger than the Earth and without it our planet would be a dark, cold rock floating in space. You guessed it: the incredible, brilliant sun.
The Earth gets more energy from this ball of fire and gas in one day than the whole world's population uses in an entire year. Every living thing depends on the sun for its existence, from tiny microbes deep in the ocean to plants, animals and people.
Humans have been tinkering with solar energy since the dawn of time. Ancient civilizations used glass and mirrors to light fires, but it wasn't until the 1950s that technology was developed to convert the sun's energy into electricity using photovoltaic cells. Today, solar technology is more efficient and less expensive and is used all around the globe to create electricity, heat water, cook food and even power vehicles.
So how do solar panels usually work? When the sun hits a solar panel, material inside (usually silicon) absorbs the energy. This causes the electrons and its atoms to get very excited and start dancing around. The atoms then get hot and shed the electrons, which travel out of the panel through copper wiring and — ZAP! — we have electricity! A control device called an inverter changes this electricity from direct current to the alternating current we use. The electricity then passes from breaker boxes to outlets and into electrical items like a computer and lights. Whatever you don't use can go back into the grid to be used by someone else.
So there you have it — the amazing power of the sun. Some people see a future where most of our energy can come from this pollution-free and renewable resource, and that's a sunny outlook that will make the whole world smile!
About: Green Mountain Energy is the nation’s longest-serving renewable energy retailer and believes in using wind, sun and water for good. The company was founded in 1997 with the mission to “change the way power is made.” Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as carbon offsets and sustainable solutions for businesses.
More from Green Mountain Energy!
Website: http://bit.ly/1IKvQId
Facebook: http://on.fb.me/1Ovf9AV
Twitter: http://bit.ly/1Qmn2dk
Instagram: http://bit.ly/1g7xE2t

published:03 Oct 2017

views:44400

Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to renewables in Africa, as is evident in Jaouad’s native Ouarzazate.
The city is home to one of the biggest solar power plants in the world, comprising almost one million parabolic mirrors. King Mohammed VI. is investing $9 billion in the facility, which provides electricity to two million people. By 2040, Morocco aims to generate almost half of its power from renewable energy sources.
Our team accompanied Jaouad Ait Rebah as he went about his challenging and laborious work, marveling at the scale of the enormous solar facilities, and asks to what degree King Mohammed VI.’s ambitious projects are actually trickling down to the little people.
_______
DW Documentary gives you knowledge beyond the headlines. Watch high-class documentaries from German broadcasters and international production companies. Meet intriguing people, travel to distant lands, get a look behind the complexities of daily life and build a deeper understanding of current affairs and global events. Subscribe and explore the world around you with DW Documentary.
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published:15 Jan 2019

views:117079

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

published:05 Jan 2016

views:2548639

Renewables require change in the energy supply chain.
Subscribe to our channel! http://goo.gl/0bsAjO
Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:
https://www.vox.com/energy-and-environment/2018/3/20/17128478/solar-duck-curve-nrel-researcher
https://www.vox.com/2016/2/10/10960848/solar-energy-duck-curve
https://www.vox.com/2016/4/8/11376196/california-grid-expansion
https://www.vox.com/2016/2/12/10970858/flattening-duck-curve-renewable-energy
And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf
Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com.
Watch our full video catalog: http://goo.gl/IZONyE
Follow Vox on Facebook: http://goo.gl/U2g06o
Or Twitter: http://goo.gl/XFrZ5H

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
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Select footage courtesy NASA
https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11056
Renewable Energy101 | National Geographic
https://youtu.be/1kUE0BZtTRc
National Geographic
https://www.youtube.com/natgeo

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
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Script:
Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?
Why do solar and wind combined provide less than 2% of the world’s energy?
To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.
For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.
Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.
The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.
The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.
For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.
For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.
And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.
Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.
For the complete script, visit https://www.prageru.com/videos/can-we-rely-wind-and-solar-energy

published:19 Oct 2015

views:1328373

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
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LINKS LINKS LINKS:
https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html
http://www.ren21.net/wp-content/uploads/2016/06/GSR_2016_Full_Report.pdf
https://yearbook.enerdata.net/total-energy/world-consumption-statistics.html
http://www.businessinsider.com/this-is-the-potential-of-solar-power-2015-9
https://yearbook.enerdata.net/total-energy/world-energy-production.html
https://yearbook.enerdata.net
https://www.skepticalscience.com/print.php?r=374
https://en.wikipedia.org/wiki/Solar_energy
TRANSCRIPT:
Legendary oilman T. Boone Pickens called the US the Saudi Arabia of wind and when you see maps like this, you understand why.
As the Earth spins toward the west, it slides underneath the air in the atmosphere, giving it from our perspective a generally eastward direction.
That easterly wind sweeps over the rocky mountains and then rushes back down across the Great Plains, creating one of the largest wind corridors in the world.
And in the last 10 years, investments in commercial wind energy have boomed across the United States. Economies of scale have started to kick in, causing the price of wind turbines to drop.
They also cost little to maintain and operate and help create energy independence for smaller communities and provide a revenue source for local ranchers who lease out the land to the energy companies.
And they’re more space-efficient. On the ground they take up very little space and those ranchers can still use the land below them for agriculture.
Plus it’s a large growth sector for jobs and currently employs over 100,000 people, expected to rise up to 600,000 in the next 30 years.
And there’s a reason I saved saved solar for last. Because there’s something different about solar from all other forms of energy, clean or dirty.
Photovoltaic solar panels, or PV panels, have no moving parts.
Every other energy source creates electricity by using heat or steam or water or wind to turn a turbine. Solar literally just collects the energy coming out of the sun and repurposes it.
When asked if he was interested in fusion power as a source of energy, Elon Musk famously said that we already have a massive fusion reactor in the sky just feeding us energy every day. All we have to do is collect it.
Now there are some negatives to solar power, let’s just get that out of the way…
First the obvious one, there’s no sun at night, so solar power is intermittent. But intermittent more like tidal energy than wind energy because we know the sun will be coming up every day.
And even in cloudy weather, it is producing something.
They take up a lot of land, unlike wind farms mentioned earlier, if you have a solar farm, you can’t use that for other things.
But, you can also use existing infrastructure like buildings and transport corridors.
The big hangups come in the construction of the solar panels because there are some hazardous materials used that need to be properly disposed of at the end of the panel’s life span.
And some PV panels require rare Elements like those found in cadmium telluride (CdTe) or copper iridium gallium selenide (CIGS), which is all the more reason to recycle the panels properly.
Luckily, 96% of a solar panel can be recycled. Unfortunately, the recycling infrastructure for solar panels is pretty small, but expected to grow tremendously in the next 30 years.
But the one that gets the solar haters the most worked up is that producing solar panels does generate greenhouse gasses. Specifically nitrogen trifluoride and sulfur hexafluoride. And yes, that sucks.
But the argument that we should stick with something like coal because PV panels create greenhouse gasses is frankly absurd.
Because with the solar panels, it’s a one-shot deal and then you’re getting clean, free energy for the next 20 or 30 years, while coal is constantly pumping out greenhouse gasses that whole time.
This debate was laid to rest by Wilfried Van Sark of Utrecht University in the Netherlands. In a paper for the trade Nature Communications, he and his team calculated the amount of greenhouse gas emissions created by PV panel production all the way back to 1975 to see how long it would take before they made back their debt.
I didn’t even mention the other type of solar energy, concentrated solar thermal plants.

published:28 Aug 2017

views:85834

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
Filmed at TED2014.
NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos at once. (We'd love to see this change, YouTube.) So for now, if you'd like to comment on this talk, please use Facebook, Twitter or G+ to discuss with your networks.

published:13 Feb 2017

views:58178

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
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published:17 Jan 2017

views:527980

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
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The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,575–49,837 exajoules (EJ). This is several times larger than the total world energy consumption, which was 559.8EJ in 2012.

Based on REN21's 2014 report, renewables contributed 19 percent to humans' global energy consumption and 22 percent to their generation of electricity in 2012 and 2013, respectively. This energy consumption is divided as 9% coming from traditional biomass, 4.2% as heat energy (non-biomass), 3.8% hydro electricity and 2% is electricity from wind, solar, geothermal, and biomass. Worldwide investments in renewable technologies amounted to more than US$214 billion in 2013, with countries like China and the United States heavily investing in wind, hydro, solar and biofuels.

National Geographic (magazine)

National Geographic, formerly The National Geographic Magazine, is the official magazine of the National Geographic Society. It has been published continuously since its first issue in 1888, nine months after the Society itself was founded. It primarily contains articles about geography, history, and world culture. The magazine is known for its thick square-bound glossy format with a yellow rectangular border and its extensive use of dramatic photographs.

The magazine is published monthly, and additional map supplements are also included with subscriptions. It is available in a traditional printed edition and through an interactive online edition. On occasion, special editions of the magazine are issued.

As of 2015, the magazine is circulated worldwide in nearly 40 local-language editions and had a global circulation of 6.8 million per month. Its U.S. circulation is around 3.5 million per month.

Energy (signal processing)

Relationship to energy in physics

Energy in this context is not, strictly speaking, the same as the conventional notion of energy in physics and the other sciences. The two concepts are, however, closely related, and it is possible to convert from one to the other:

For example, if x(t) represents the potential (in volts) of an electrical signal propagating across a transmission line, then Z would represent the characteristic impedance (in ohms) of the transmission line. The units of measure for the signal energy would appear as volt2·seconds, which is not dimensionally correct for energy in the sense of the physical sciences. After dividing by Z, however, the dimensions of E would become volt2·seconds per ohm, which is equivalent to joules, the SI unit for energy as defined in the physical sciences.

Renewable Energy 101: How Does Solar Energy Work?

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What's the most abundant energy source in our solar system? Here's a hint, it's 1 million times bigger than the Earth and without it our planet would be a dark, cold rock floating in space. You guessed it: the incredible, brilliant sun.
The Earth gets more energy from this ball of fire and gas in one day than the whole world's population uses in an entire year. Every living thing depends on the sun for its existence, from tiny microbes deep in the ocean to plants, animals and people.
Humans have been tinkering with solar energy since the dawn of time. Ancient civilizations used glass and mirrors to light fires, but it wasn't until the 1950s that technology was developed to convert the sun's energy into electricity using photovoltaic cells. Today, solar technology is more efficient and less expensive and is used all around the globe to create electricity, heat water, cook food and even power vehicles.
So how do solar panels usually work? When the sun hits a solar panel, material inside (usually silicon) absorbs the energy. This causes the electrons and its atoms to get very excited and start dancing around. The atoms then get hot and shed the electrons, which travel out of the panel through copper wiring and — ZAP! — we have electricity! A control device called an inverter changes this electricity from direct current to the alternating current we use. The electricity then passes from breaker boxes to outlets and into electrical items like a computer and lights. Whatever you don't use can go back into the grid to be used by someone else.
So there you have it — the amazing power of the sun. Some people see a future where most of our energy can come from this pollution-free and renewable resource, and that's a sunny outlook that will make the whole world smile!
About: Green Mountain Energy is the nation’s longest-serving renewable energy retailer and believes in using wind, sun and water for good. The company was founded in 1997 with the mission to “change the way power is made.” Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as carbon offsets and sustainable solutions for businesses.
More from Green Mountain Energy!
Website: http://bit.ly/1IKvQId
Facebook: http://on.fb.me/1Ovf9AV
Twitter: http://bit.ly/1Qmn2dk
Instagram: http://bit.ly/1g7xE2t

Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to renewables in Africa, as is evident in Jaouad’s native Ouarzazate.
The city is home to one of the biggest solar power plants in the world, comprising almost one million parabolic mirrors. King Mohammed VI. is investing $9 billion in the facility, which provides electricity to two million people. By 2040, Morocco aims to generate almost half of its power from renewable energy sources.
Our team accompanied Jaouad Ait Rebah as he went about his challenging and laborious work, marveling at the scale of the enormous solar facilities, and asks to what degree King Mohammed VI.’s ambitious projects are actually trickling down to the little people.
_______
DW Documentary gives you knowledge beyond the headlines. Watch high-class documentaries from German broadcasters and international production companies. Meet intriguing people, travel to distant lands, get a look behind the complexities of daily life and build a deeper understanding of current affairs and global events. Subscribe and explore the world around you with DW Documentary.
Subscribe to DW Documentary:
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4:59

How do solar panels work? - Richard Komp

How do solar panels work? - Richard Komp

How do solar panels work? - Richard Komp

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

3:58

The 'duck curve' is solar energy's greatest challenge

The 'duck curve' is solar energy's greatest challenge

The 'duck curve' is solar energy's greatest challenge

Renewables require change in the energy supply chain.
Subscribe to our channel! http://goo.gl/0bsAjO
Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:
https://www.vox.com/energy-and-environment/2018/3/20/17128478/solar-duck-curve-nrel-researcher
https://www.vox.com/2016/2/10/10960848/solar-energy-duck-curve
https://www.vox.com/2016/4/8/11376196/california-grid-expansion
https://www.vox.com/2016/2/12/10970858/flattening-duck-curve-renewable-energy
And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf
Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com.
Watch our full video catalog: http://goo.gl/IZONyE
Follow Vox on Facebook: http://goo.gl/U2g06o
Or Twitter: http://goo.gl/XFrZ5H

Renewable Energy 101 | National Geographic

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
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Select footage courtesy NASA
https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11056
Renewable Energy101 | National Geographic
https://youtu.be/1kUE0BZtTRc
National Geographic
https://www.youtube.com/natgeo

5:55

Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

Can We Rely on Wind and Solar Energy?

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
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Script:
Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?
Why do solar and wind combined provide less than 2% of the world’s energy?
To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.
For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.
Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.
The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.
The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.
For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.
For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.
And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.
Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.
For the complete script, visit https://www.prageru.com/videos/can-we-rely-wind-and-solar-energy

11:32

Renewable Energy Series: Solar Vs Wind | Answers With Joe

Renewable Energy Series: Solar Vs Wind | Answers With Joe

Renewable Energy Series: Solar Vs Wind | Answers With Joe

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
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LINKS LINKS LINKS:
https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html
http://www.ren21.net/wp-content/uploads/2016/06/GSR_2016_Full_Report.pdf
https://yearbook.enerdata.net/total-energy/world-consumption-statistics.html
http://www.businessinsider.com/this-is-the-potential-of-solar-power-2015-9
https://yearbook.enerdata.net/total-energy/world-energy-production.html
https://yearbook.enerdata.net
https://www.skepticalscience.com/print.php?r=374
https://en.wikipedia.org/wiki/Solar_energy
TRANSCRIPT:
Legendary oilman T. Boone Pickens called the US the Saudi Arabia of wind and when you see maps like this, you understand why.
As the Earth spins toward the west, it slides underneath the air in the atmosphere, giving it from our perspective a generally eastward direction.
That easterly wind sweeps over the rocky mountains and then rushes back down across the Great Plains, creating one of the largest wind corridors in the world.
And in the last 10 years, investments in commercial wind energy have boomed across the United States. Economies of scale have started to kick in, causing the price of wind turbines to drop.
They also cost little to maintain and operate and help create energy independence for smaller communities and provide a revenue source for local ranchers who lease out the land to the energy companies.
And they’re more space-efficient. On the ground they take up very little space and those ranchers can still use the land below them for agriculture.
Plus it’s a large growth sector for jobs and currently employs over 100,000 people, expected to rise up to 600,000 in the next 30 years.
And there’s a reason I saved saved solar for last. Because there’s something different about solar from all other forms of energy, clean or dirty.
Photovoltaic solar panels, or PV panels, have no moving parts.
Every other energy source creates electricity by using heat or steam or water or wind to turn a turbine. Solar literally just collects the energy coming out of the sun and repurposes it.
When asked if he was interested in fusion power as a source of energy, Elon Musk famously said that we already have a massive fusion reactor in the sky just feeding us energy every day. All we have to do is collect it.
Now there are some negatives to solar power, let’s just get that out of the way…
First the obvious one, there’s no sun at night, so solar power is intermittent. But intermittent more like tidal energy than wind energy because we know the sun will be coming up every day.
And even in cloudy weather, it is producing something.
They take up a lot of land, unlike wind farms mentioned earlier, if you have a solar farm, you can’t use that for other things.
But, you can also use existing infrastructure like buildings and transport corridors.
The big hangups come in the construction of the solar panels because there are some hazardous materials used that need to be properly disposed of at the end of the panel’s life span.
And some PV panels require rare Elements like those found in cadmium telluride (CdTe) or copper iridium gallium selenide (CIGS), which is all the more reason to recycle the panels properly.
Luckily, 96% of a solar panel can be recycled. Unfortunately, the recycling infrastructure for solar panels is pretty small, but expected to grow tremendously in the next 30 years.
But the one that gets the solar haters the most worked up is that producing solar panels does generate greenhouse gasses. Specifically nitrogen trifluoride and sulfur hexafluoride. And yes, that sucks.
But the argument that we should stick with something like coal because PV panels create greenhouse gasses is frankly absurd.
Because with the solar panels, it’s a one-shot deal and then you’re getting clean, free energy for the next 20 or 30 years, while coal is constantly pumping out greenhouse gasses that whole time.
This debate was laid to rest by Wilfried Van Sark of Utrecht University in the Netherlands. In a paper for the trade Nature Communications, he and his team calculated the amount of greenhouse gas emissions created by PV panel production all the way back to 1975 to see how long it would take before they made back their debt.
I didn’t even mention the other type of solar energy, concentrated solar thermal plants.

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
Filmed at TED2014.
NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos at once. (We'd love to see this change, YouTube.) So for now, if you'd like to comment on this talk, please use Facebook, Twitter or G+ to discuss with your networks.

5:31

Is Solar Energy Really Better Than Nuclear Energy?

Is Solar Energy Really Better Than Nuclear Energy?

Is Solar Energy Really Better Than Nuclear Energy?

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
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28:53

Battery Powered Homes | Renewable Solar Energy Storage

Battery Powered Homes | Renewable Solar Energy Storage

Battery Powered Homes | Renewable Solar Energy Storage

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
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Renewable Energy 101: How Does Solar Energy Work?

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What...

Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to rene...

published: 15 Jan 2019

How do solar panels work? - Richard Komp

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

published: 05 Jan 2016

The 'duck curve' is solar energy's greatest challenge

Renewables require change in the energy supply chain.
Subscribe to our channel! http://goo.gl/0bsAjO
Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You c...

Renewable Energy 101 | National Geographic

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
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Select footage courtesy NASA
htt...

published: 21 Sep 2017

Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

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Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won’t last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy sources. So why don’t we exchange our fossil fuel dependence for an existence based only on renewables? Federico Rosei and Renzo Rosei describe the challenges.
Lesson by Federico Rosei and Renzo Rosei, directed by Giulia Martinelli.
Thank you so much to our patrons for your support! Without you this video would not be possible! David & Pamela Fialkoff, Miami BeachFamily, Kostadin Man...

published: 07 Dec 2017

Can We Rely on Wind and Solar Energy?

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
Donate today to PragerU! http://l.prageru.com/2ylo1Yt
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Join Prager United to get new swag every quarter, exclusive early access to our videos, and an annual TownHall phone call with Dennis Prager! http://l.prage...

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
Filmed at TED2014.
NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos...

published: 13 Feb 2017

Is Solar Energy Really Better Than Nuclear Energy?

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
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published: 17 Jan 2017

Battery Powered Homes | Renewable Solar Energy Storage

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
WatchCatalyst on ABC iview: http://iview.abc.net.au/programs/catalyst
SUBSCRIBE: www.youtube.com/ABCScience
About Catalyst:
Catalyst is Australia's flagship science documentary program, showcasing Australian and international stories that impact us all.
Connect with other Catalyst fans:
Like Catalyst on Facebook: http://www.facebook.com/ABCScience
Visit the Catalyst website: http://www.abc.net.au/Catalyst
Follow Catalyst on Twitter: http://twitter.com/ABCCatalyst
This is an official Australian Broadcasting Corporation YouTube ...

Renewable Energy 101: How Does Solar Energy Work?

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings...

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What's the most abundant energy source in our solar system? Here's a hint, it's 1 million times bigger than the Earth and without it our planet would be a dark, cold rock floating in space. You guessed it: the incredible, brilliant sun.
The Earth gets more energy from this ball of fire and gas in one day than the whole world's population uses in an entire year. Every living thing depends on the sun for its existence, from tiny microbes deep in the ocean to plants, animals and people.
Humans have been tinkering with solar energy since the dawn of time. Ancient civilizations used glass and mirrors to light fires, but it wasn't until the 1950s that technology was developed to convert the sun's energy into electricity using photovoltaic cells. Today, solar technology is more efficient and less expensive and is used all around the globe to create electricity, heat water, cook food and even power vehicles.
So how do solar panels usually work? When the sun hits a solar panel, material inside (usually silicon) absorbs the energy. This causes the electrons and its atoms to get very excited and start dancing around. The atoms then get hot and shed the electrons, which travel out of the panel through copper wiring and — ZAP! — we have electricity! A control device called an inverter changes this electricity from direct current to the alternating current we use. The electricity then passes from breaker boxes to outlets and into electrical items like a computer and lights. Whatever you don't use can go back into the grid to be used by someone else.
So there you have it — the amazing power of the sun. Some people see a future where most of our energy can come from this pollution-free and renewable resource, and that's a sunny outlook that will make the whole world smile!
About: Green Mountain Energy is the nation’s longest-serving renewable energy retailer and believes in using wind, sun and water for good. The company was founded in 1997 with the mission to “change the way power is made.” Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as carbon offsets and sustainable solutions for businesses.
More from Green Mountain Energy!
Website: http://bit.ly/1IKvQId
Facebook: http://on.fb.me/1Ovf9AV
Twitter: http://bit.ly/1Qmn2dk
Instagram: http://bit.ly/1g7xE2t

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What's the most abundant energy source in our solar system? Here's a hint, it's 1 million times bigger than the Earth and without it our planet would be a dark, cold rock floating in space. You guessed it: the incredible, brilliant sun.
The Earth gets more energy from this ball of fire and gas in one day than the whole world's population uses in an entire year. Every living thing depends on the sun for its existence, from tiny microbes deep in the ocean to plants, animals and people.
Humans have been tinkering with solar energy since the dawn of time. Ancient civilizations used glass and mirrors to light fires, but it wasn't until the 1950s that technology was developed to convert the sun's energy into electricity using photovoltaic cells. Today, solar technology is more efficient and less expensive and is used all around the globe to create electricity, heat water, cook food and even power vehicles.
So how do solar panels usually work? When the sun hits a solar panel, material inside (usually silicon) absorbs the energy. This causes the electrons and its atoms to get very excited and start dancing around. The atoms then get hot and shed the electrons, which travel out of the panel through copper wiring and — ZAP! — we have electricity! A control device called an inverter changes this electricity from direct current to the alternating current we use. The electricity then passes from breaker boxes to outlets and into electrical items like a computer and lights. Whatever you don't use can go back into the grid to be used by someone else.
So there you have it — the amazing power of the sun. Some people see a future where most of our energy can come from this pollution-free and renewable resource, and that's a sunny outlook that will make the whole world smile!
About: Green Mountain Energy is the nation’s longest-serving renewable energy retailer and believes in using wind, sun and water for good. The company was founded in 1997 with the mission to “change the way power is made.” Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as carbon offsets and sustainable solutions for businesses.
More from Green Mountain Energy!
Website: http://bit.ly/1IKvQId
Facebook: http://on.fb.me/1Ovf9AV
Twitter: http://bit.ly/1Qmn2dk
Instagram: http://bit.ly/1g7xE2t

Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah chan...

Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to renewables in Africa, as is evident in Jaouad’s native Ouarzazate.
The city is home to one of the biggest solar power plants in the world, comprising almost one million parabolic mirrors. King Mohammed VI. is investing $9 billion in the facility, which provides electricity to two million people. By 2040, Morocco aims to generate almost half of its power from renewable energy sources.
Our team accompanied Jaouad Ait Rebah as he went about his challenging and laborious work, marveling at the scale of the enormous solar facilities, and asks to what degree King Mohammed VI.’s ambitious projects are actually trickling down to the little people.
_______
DW Documentary gives you knowledge beyond the headlines. Watch high-class documentaries from German broadcasters and international production companies. Meet intriguing people, travel to distant lands, get a look behind the complexities of daily life and build a deeper understanding of current affairs and global events. Subscribe and explore the world around you with DW Documentary.
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Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to renewables in Africa, as is evident in Jaouad’s native Ouarzazate.
The city is home to one of the biggest solar power plants in the world, comprising almost one million parabolic mirrors. King Mohammed VI. is investing $9 billion in the facility, which provides electricity to two million people. By 2040, Morocco aims to generate almost half of its power from renewable energy sources.
Our team accompanied Jaouad Ait Rebah as he went about his challenging and laborious work, marveling at the scale of the enormous solar facilities, and asks to what degree King Mohammed VI.’s ambitious projects are actually trickling down to the little people.
_______
DW Documentary gives you knowledge beyond the headlines. Watch high-class documentaries from German broadcasters and international production companies. Meet intriguing people, travel to distant lands, get a look behind the complexities of daily life and build a deeper understanding of current affairs and global events. Subscribe and explore the world around you with DW Documentary.
Subscribe to DW Documentary:
https://www.youtube.com/channel/UCW39zufHfsuGgpLviKh297Q?sub_confirmation=1#
For more documentaries visit:
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Instagram
https://www.instagram.com/dwdocumentary/
Facebook:
https://www.facebook.com/dw.stories
DW netiquette policy: http://www.dw.com/en/dws-netiquette-policy/a-5300954

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

Renewables require change in the energy supply chain.
Subscribe to our channel! http://goo.gl/0bsAjO
Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:
https://www.vox.com/energy-and-environment/2018/3/20/17128478/solar-duck-curve-nrel-researcher
https://www.vox.com/2016/2/10/10960848/solar-energy-duck-curve
https://www.vox.com/2016/4/8/11376196/california-grid-expansion
https://www.vox.com/2016/2/12/10970858/flattening-duck-curve-renewable-energy
And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf
Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com.
Watch our full video catalog: http://goo.gl/IZONyE
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Or Twitter: http://goo.gl/XFrZ5H

Renewables require change in the energy supply chain.
Subscribe to our channel! http://goo.gl/0bsAjO
Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:
https://www.vox.com/energy-and-environment/2018/3/20/17128478/solar-duck-curve-nrel-researcher
https://www.vox.com/2016/2/10/10960848/solar-energy-duck-curve
https://www.vox.com/2016/4/8/11376196/california-grid-expansion
https://www.vox.com/2016/2/12/10970858/flattening-duck-curve-renewable-energy
And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf
Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com.
Watch our full video catalog: http://goo.gl/IZONyE
Follow Vox on Facebook: http://goo.gl/U2g06o
Or Twitter: http://goo.gl/XFrZ5H

Renewable Energy 101 | National Geographic

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-gro...

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
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OfficialSite: http://bit.ly/NatGeoOfficialSite
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Twitter: http://bit.ly/NatGeoTwitter
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Select footage courtesy NASA
https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11056
Renewable Energy101 | National Geographic
https://youtu.be/1kUE0BZtTRc
National Geographic
https://www.youtube.com/natgeo

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
OfficialSite: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Select footage courtesy NASA
https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11056
Renewable Energy101 | National Geographic
https://youtu.be/1kUE0BZtTRc
National Geographic
https://www.youtube.com/natgeo

Can We Rely on Wind and Solar Energy?

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclea...

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
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Script:
Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?
Why do solar and wind combined provide less than 2% of the world’s energy?
To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.
For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.
Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.
The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.
The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.
For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.
For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.
And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.
Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.
For the complete script, visit https://www.prageru.com/videos/can-we-rely-wind-and-solar-energy

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
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Script:
Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?
Why do solar and wind combined provide less than 2% of the world’s energy?
To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.
For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.
Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.
The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.
The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.
For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.
For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.
And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.
Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.
For the complete script, visit https://www.prageru.com/videos/can-we-rely-wind-and-solar-energy

Renewable Energy Series: Solar Vs Wind | Answers With Joe

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
Follow me at all m...

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
Follow me at all my places!
Instagram: https://instagram.com/answerswithjoe
Snapchat: https://www.snapchat.com/add/answerswithjoe
Facebook: http://www.facebook.com/answerswithjoe
Twitter: https://www.twitter.com/answerswithjoe
LINKS LINKS LINKS:
https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html
http://www.ren21.net/wp-content/uploads/2016/06/GSR_2016_Full_Report.pdf
https://yearbook.enerdata.net/total-energy/world-consumption-statistics.html
http://www.businessinsider.com/this-is-the-potential-of-solar-power-2015-9
https://yearbook.enerdata.net/total-energy/world-energy-production.html
https://yearbook.enerdata.net
https://www.skepticalscience.com/print.php?r=374
https://en.wikipedia.org/wiki/Solar_energy
TRANSCRIPT:
Legendary oilman T. Boone Pickens called the US the Saudi Arabia of wind and when you see maps like this, you understand why.
As the Earth spins toward the west, it slides underneath the air in the atmosphere, giving it from our perspective a generally eastward direction.
That easterly wind sweeps over the rocky mountains and then rushes back down across the Great Plains, creating one of the largest wind corridors in the world.
And in the last 10 years, investments in commercial wind energy have boomed across the United States. Economies of scale have started to kick in, causing the price of wind turbines to drop.
They also cost little to maintain and operate and help create energy independence for smaller communities and provide a revenue source for local ranchers who lease out the land to the energy companies.
And they’re more space-efficient. On the ground they take up very little space and those ranchers can still use the land below them for agriculture.
Plus it’s a large growth sector for jobs and currently employs over 100,000 people, expected to rise up to 600,000 in the next 30 years.
And there’s a reason I saved saved solar for last. Because there’s something different about solar from all other forms of energy, clean or dirty.
Photovoltaic solar panels, or PV panels, have no moving parts.
Every other energy source creates electricity by using heat or steam or water or wind to turn a turbine. Solar literally just collects the energy coming out of the sun and repurposes it.
When asked if he was interested in fusion power as a source of energy, Elon Musk famously said that we already have a massive fusion reactor in the sky just feeding us energy every day. All we have to do is collect it.
Now there are some negatives to solar power, let’s just get that out of the way…
First the obvious one, there’s no sun at night, so solar power is intermittent. But intermittent more like tidal energy than wind energy because we know the sun will be coming up every day.
And even in cloudy weather, it is producing something.
They take up a lot of land, unlike wind farms mentioned earlier, if you have a solar farm, you can’t use that for other things.
But, you can also use existing infrastructure like buildings and transport corridors.
The big hangups come in the construction of the solar panels because there are some hazardous materials used that need to be properly disposed of at the end of the panel’s life span.
And some PV panels require rare Elements like those found in cadmium telluride (CdTe) or copper iridium gallium selenide (CIGS), which is all the more reason to recycle the panels properly.
Luckily, 96% of a solar panel can be recycled. Unfortunately, the recycling infrastructure for solar panels is pretty small, but expected to grow tremendously in the next 30 years.
But the one that gets the solar haters the most worked up is that producing solar panels does generate greenhouse gasses. Specifically nitrogen trifluoride and sulfur hexafluoride. And yes, that sucks.
But the argument that we should stick with something like coal because PV panels create greenhouse gasses is frankly absurd.
Because with the solar panels, it’s a one-shot deal and then you’re getting clean, free energy for the next 20 or 30 years, while coal is constantly pumping out greenhouse gasses that whole time.
This debate was laid to rest by Wilfried Van Sark of Utrecht University in the Netherlands. In a paper for the trade Nature Communications, he and his team calculated the amount of greenhouse gas emissions created by PV panel production all the way back to 1975 to see how long it would take before they made back their debt.
I didn’t even mention the other type of solar energy, concentrated solar thermal plants.

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
Follow me at all my places!
Instagram: https://instagram.com/answerswithjoe
Snapchat: https://www.snapchat.com/add/answerswithjoe
Facebook: http://www.facebook.com/answerswithjoe
Twitter: https://www.twitter.com/answerswithjoe
LINKS LINKS LINKS:
https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html
http://www.ren21.net/wp-content/uploads/2016/06/GSR_2016_Full_Report.pdf
https://yearbook.enerdata.net/total-energy/world-consumption-statistics.html
http://www.businessinsider.com/this-is-the-potential-of-solar-power-2015-9
https://yearbook.enerdata.net/total-energy/world-energy-production.html
https://yearbook.enerdata.net
https://www.skepticalscience.com/print.php?r=374
https://en.wikipedia.org/wiki/Solar_energy
TRANSCRIPT:
Legendary oilman T. Boone Pickens called the US the Saudi Arabia of wind and when you see maps like this, you understand why.
As the Earth spins toward the west, it slides underneath the air in the atmosphere, giving it from our perspective a generally eastward direction.
That easterly wind sweeps over the rocky mountains and then rushes back down across the Great Plains, creating one of the largest wind corridors in the world.
And in the last 10 years, investments in commercial wind energy have boomed across the United States. Economies of scale have started to kick in, causing the price of wind turbines to drop.
They also cost little to maintain and operate and help create energy independence for smaller communities and provide a revenue source for local ranchers who lease out the land to the energy companies.
And they’re more space-efficient. On the ground they take up very little space and those ranchers can still use the land below them for agriculture.
Plus it’s a large growth sector for jobs and currently employs over 100,000 people, expected to rise up to 600,000 in the next 30 years.
And there’s a reason I saved saved solar for last. Because there’s something different about solar from all other forms of energy, clean or dirty.
Photovoltaic solar panels, or PV panels, have no moving parts.
Every other energy source creates electricity by using heat or steam or water or wind to turn a turbine. Solar literally just collects the energy coming out of the sun and repurposes it.
When asked if he was interested in fusion power as a source of energy, Elon Musk famously said that we already have a massive fusion reactor in the sky just feeding us energy every day. All we have to do is collect it.
Now there are some negatives to solar power, let’s just get that out of the way…
First the obvious one, there’s no sun at night, so solar power is intermittent. But intermittent more like tidal energy than wind energy because we know the sun will be coming up every day.
And even in cloudy weather, it is producing something.
They take up a lot of land, unlike wind farms mentioned earlier, if you have a solar farm, you can’t use that for other things.
But, you can also use existing infrastructure like buildings and transport corridors.
The big hangups come in the construction of the solar panels because there are some hazardous materials used that need to be properly disposed of at the end of the panel’s life span.
And some PV panels require rare Elements like those found in cadmium telluride (CdTe) or copper iridium gallium selenide (CIGS), which is all the more reason to recycle the panels properly.
Luckily, 96% of a solar panel can be recycled. Unfortunately, the recycling infrastructure for solar panels is pretty small, but expected to grow tremendously in the next 30 years.
But the one that gets the solar haters the most worked up is that producing solar panels does generate greenhouse gasses. Specifically nitrogen trifluoride and sulfur hexafluoride. And yes, that sucks.
But the argument that we should stick with something like coal because PV panels create greenhouse gasses is frankly absurd.
Because with the solar panels, it’s a one-shot deal and then you’re getting clean, free energy for the next 20 or 30 years, while coal is constantly pumping out greenhouse gasses that whole time.
This debate was laid to rest by Wilfried Van Sark of Utrecht University in the Netherlands. In a paper for the trade Nature Communications, he and his team calculated the amount of greenhouse gas emissions created by PV panel production all the way back to 1975 to see how long it would take before they made back their debt.
I didn’t even mention the other type of solar energy, concentrated solar thermal plants.

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and ...

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
Filmed at TED2014.
NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos at once. (We'd love to see this change, YouTube.) So for now, if you'd like to comment on this talk, please use Facebook, Twitter or G+ to discuss with your networks.

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
Filmed at TED2014.
NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos at once. (We'd love to see this change, YouTube.) So for now, if you'd like to comment on this talk, please use Facebook, Twitter or G+ to discuss with your networks.

Is Solar Energy Really Better Than Nuclear Energy?

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as...

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
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Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
SUBSCRIBE TO OUR CHANNEL —► http://bit.ly/2glTFyc
Patreon..........► https://www.patreon.com/user?u=861446
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Help us caption & translate this video!
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Battery Powered Homes | Renewable Solar Energy Storage

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been c...

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
WatchCatalyst on ABC iview: http://iview.abc.net.au/programs/catalyst
SUBSCRIBE: www.youtube.com/ABCScience
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Catalyst is Australia's flagship science documentary program, showcasing Australian and international stories that impact us all.
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Contributions may be removed if they violate ABC'sOnlineConditions of Use http://www.abc.net.au/conditions.htm (Section 3).

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
WatchCatalyst on ABC iview: http://iview.abc.net.au/programs/catalyst
SUBSCRIBE: www.youtube.com/ABCScience
About Catalyst:
Catalyst is Australia's flagship science documentary program, showcasing Australian and international stories that impact us all.
Connect with other Catalyst fans:
Like Catalyst on Facebook: http://www.facebook.com/ABCScience
Visit the Catalyst website: http://www.abc.net.au/Catalyst
Follow Catalyst on Twitter: http://twitter.com/ABCCatalyst
This is an official Australian Broadcasting CorporationYouTube channel.
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Contributions may be removed if they violate ABC'sOnlineConditions of Use http://www.abc.net.au/conditions.htm (Section 3).

Renewable Energy 101: How Does Solar Energy Work?

https://www.greenmountainenergy.com/why-renewable-energy/renewable-energy-101/solar/
The sun has powered organic life on planet Earth since before human beings even existed. And we've attempted to harness the power of solar energy since the very beginning. Although early uses for solar energy revolved around methods to ignite a fire, the 20th century introduced mankind to the potential of solar electricity. In this video, we'll explore the technology behind a solar power system and how it converts the sun's rays into clean, renewable energy while caring for Mother Earth. It's an energy strategy that proves working with nature can yield greater results than trying to fight against it. You can visit our website for more information today!
Transcript:
Renewable Energy101Question: What's the most abundant energy source in our solar system? Here's a hint, it's 1 million times bigger than the Earth and without it our planet would be a dark, cold rock floating in space. You guessed it: the incredible, brilliant sun.
The Earth gets more energy from this ball of fire and gas in one day than the whole world's population uses in an entire year. Every living thing depends on the sun for its existence, from tiny microbes deep in the ocean to plants, animals and people.
Humans have been tinkering with solar energy since the dawn of time. Ancient civilizations used glass and mirrors to light fires, but it wasn't until the 1950s that technology was developed to convert the sun's energy into electricity using photovoltaic cells. Today, solar technology is more efficient and less expensive and is used all around the globe to create electricity, heat water, cook food and even power vehicles.
So how do solar panels usually work? When the sun hits a solar panel, material inside (usually silicon) absorbs the energy. This causes the electrons and its atoms to get very excited and start dancing around. The atoms then get hot and shed the electrons, which travel out of the panel through copper wiring and — ZAP! — we have electricity! A control device called an inverter changes this electricity from direct current to the alternating current we use. The electricity then passes from breaker boxes to outlets and into electrical items like a computer and lights. Whatever you don't use can go back into the grid to be used by someone else.
So there you have it — the amazing power of the sun. Some people see a future where most of our energy can come from this pollution-free and renewable resource, and that's a sunny outlook that will make the whole world smile!
About: Green Mountain Energy is the nation’s longest-serving renewable energy retailer and believes in using wind, sun and water for good. The company was founded in 1997 with the mission to “change the way power is made.” Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as carbon offsets and sustainable solutions for businesses.
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Solar energy in Morocco is transforming the renewable energy scene. One of the world’s biggest solar power plants is situated in Morocco.
Jaouad Ait Rebah changes a lot of people’s lives in the High Atlas Mountains - by bringing light where there is darkness. The Moroccan entrepreneur installs solar panels in the area’s picturesque, but remote villages. For the high-altitude residents, the difference is like that of night and day.
The beautiful scenery is mostly lost on those living there. They live in extreme poverty. Many young people have left due to the lack of jobs. Now, however, the solar panels are modernizing the villages.
Jaouad Ait Rebah and his work symbolize the energy revolution that has been sweeping across Morocco in recent years. The country is leading the change to renewables in Africa, as is evident in Jaouad’s native Ouarzazate.
The city is home to one of the biggest solar power plants in the world, comprising almost one million parabolic mirrors. King Mohammed VI. is investing $9 billion in the facility, which provides electricity to two million people. By 2040, Morocco aims to generate almost half of its power from renewable energy sources.
Our team accompanied Jaouad Ait Rebah as he went about his challenging and laborious work, marveling at the scale of the enormous solar facilities, and asks to what degree King Mohammed VI.’s ambitious projects are actually trickling down to the little people.
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How do solar panels work? - Richard Komp

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp
The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.
Lesson by Richard Komp, animation by Globizco.

The 'duck curve' is solar energy's greatest challenge

Renewables require change in the energy supply chain.
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Electricity is incredibly difficult to store, so grid operators have to generate it at the exact moment it is demanded. In order to do this, they create incredibly accurate models of the total electric loads, that is how much energy will be consumed on a given day. But as utilities started to produce more energy from renewable sources like solar, the models started to shift as well.
California researchers discovered a peculiarity in their state’s electric load curves, that started to look more and more like a duck. And that duck shaped chart highlights the greatest challenge to solar energy growth in the US.
Vox writer David Roberts has been covering the issue for a few years now. You can read some of his past explainers on the duck curve, and its solutions at the links below:
https://www.vox.com/energy-and-environment/2018/3/20/17128478/solar-duck-curve-nrel-researcher
https://www.vox.com/2016/2/10/10960848/solar-energy-duck-curve
https://www.vox.com/2016/4/8/11376196/california-grid-expansion
https://www.vox.com/2016/2/12/10970858/flattening-duck-curve-renewable-energy
And if you would like to read some of the source material used in the video above, you can check those out here: https://www.caiso.com/documents/flexibleresourceshelprenewables_fastfacts.pdf https://www.nrel.gov/docs/fy16osti/65023.pdf
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Renewable Energy 101 | National Geographic

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.
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Can We Rely on Wind and Solar Energy?

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for IndustrialProgress explains.
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Script:
Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?
Why do solar and wind combined provide less than 2% of the world’s energy?
To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.
For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.
Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.
The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.
The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.
For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.
For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.
And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.
Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.
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Renewable Energy Series: Solar Vs Wind | Answers With Joe

Today I wrap up my renewable energy series with a look at solar vs wind energy. Support me on Patreon! http://www.patreon.com/answerswithjoe
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LINKS LINKS LINKS:
https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html
http://www.ren21.net/wp-content/uploads/2016/06/GSR_2016_Full_Report.pdf
https://yearbook.enerdata.net/total-energy/world-consumption-statistics.html
http://www.businessinsider.com/this-is-the-potential-of-solar-power-2015-9
https://yearbook.enerdata.net/total-energy/world-energy-production.html
https://yearbook.enerdata.net
https://www.skepticalscience.com/print.php?r=374
https://en.wikipedia.org/wiki/Solar_energy
TRANSCRIPT:
Legendary oilman T. Boone Pickens called the US the Saudi Arabia of wind and when you see maps like this, you understand why.
As the Earth spins toward the west, it slides underneath the air in the atmosphere, giving it from our perspective a generally eastward direction.
That easterly wind sweeps over the rocky mountains and then rushes back down across the Great Plains, creating one of the largest wind corridors in the world.
And in the last 10 years, investments in commercial wind energy have boomed across the United States. Economies of scale have started to kick in, causing the price of wind turbines to drop.
They also cost little to maintain and operate and help create energy independence for smaller communities and provide a revenue source for local ranchers who lease out the land to the energy companies.
And they’re more space-efficient. On the ground they take up very little space and those ranchers can still use the land below them for agriculture.
Plus it’s a large growth sector for jobs and currently employs over 100,000 people, expected to rise up to 600,000 in the next 30 years.
And there’s a reason I saved saved solar for last. Because there’s something different about solar from all other forms of energy, clean or dirty.
Photovoltaic solar panels, or PV panels, have no moving parts.
Every other energy source creates electricity by using heat or steam or water or wind to turn a turbine. Solar literally just collects the energy coming out of the sun and repurposes it.
When asked if he was interested in fusion power as a source of energy, Elon Musk famously said that we already have a massive fusion reactor in the sky just feeding us energy every day. All we have to do is collect it.
Now there are some negatives to solar power, let’s just get that out of the way…
First the obvious one, there’s no sun at night, so solar power is intermittent. But intermittent more like tidal energy than wind energy because we know the sun will be coming up every day.
And even in cloudy weather, it is producing something.
They take up a lot of land, unlike wind farms mentioned earlier, if you have a solar farm, you can’t use that for other things.
But, you can also use existing infrastructure like buildings and transport corridors.
The big hangups come in the construction of the solar panels because there are some hazardous materials used that need to be properly disposed of at the end of the panel’s life span.
And some PV panels require rare Elements like those found in cadmium telluride (CdTe) or copper iridium gallium selenide (CIGS), which is all the more reason to recycle the panels properly.
Luckily, 96% of a solar panel can be recycled. Unfortunately, the recycling infrastructure for solar panels is pretty small, but expected to grow tremendously in the next 30 years.
But the one that gets the solar haters the most worked up is that producing solar panels does generate greenhouse gasses. Specifically nitrogen trifluoride and sulfur hexafluoride. And yes, that sucks.
But the argument that we should stick with something like coal because PV panels create greenhouse gasses is frankly absurd.
Because with the solar panels, it’s a one-shot deal and then you’re getting clean, free energy for the next 20 or 30 years, while coal is constantly pumping out greenhouse gasses that whole time.
This debate was laid to rest by Wilfried Van Sark of Utrecht University in the Netherlands. In a paper for the trade Nature Communications, he and his team calculated the amount of greenhouse gas emissions created by PV panel production all the way back to 1975 to see how long it would take before they made back their debt.
I didn’t even mention the other type of solar energy, concentrated solar thermal plants.

More Americans work in the booming solar or windpower industries than in the coal industry, yet renewables are often claimed to be unreliable, needing vast and costly energy storage. Amory Lovins explains why that’s a myth.
TEDArchive presents previously unpublished talks from TED conferences.
Enjoy this unedited talk by Amory Lovins.
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Is Solar Energy Really Better Than Nuclear Energy?

Nuclear energy is a cheap and relatively clean source of energy for the planet, but lately it has been mired in controversy. Solar energy is often brought up as alternative resource, but is it really better than nuclear energy? Which is better for the planet? Let’s find out in this battle of Nuclear Energy vs Solar Energy!
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Battery Powered Homes | Renewable Solar Energy Storage

There's a power revolution heading for our homes – a device that allows you to take power into your own hands. Its batteries, home batteries, and they've been called the holy grail of renewables – the key to the transition away from fossil fuels.
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The large magnitude of solar energy available makes it a highly appealing source of electricity. The United Nations Development Programme in its 2000 World Energy Assessment found that the annual potential of solar energy was 1,575–49,837 exajoules (EJ). This is several times larger than the total world energy consumption, which was 559.8EJ in 2012.

As the first cannabis company to power an at-scale, indoor cultivation project with renewablesolar energy, Canndescent provides a critical template for sustainability in an industry where outdoor growers tax water resources and indoor and light dep greenhouse growers consume an estimated 1% of the electricity produced in the United States....

As the first cannabis company to power an at-scale, indoor cultivation project with renewablesolar energy, Canndescent provides a critical template for sustainability in an industry where outdoor growers tax water resources and indoor and light dep greenhouse growers consume an estimated 1% of the electricity produced in the United States....

Furthermore, it is vastly cheaper than other renewable sources like wind or solar which also require more land area. Power demand is not constant, neither is solar energy output or wind output ... With solarpower or wind, you cannot turn up the sun or force more wind to blow....

France looks to solar, renewable energy | Sustaina...

Latest News for: Solar power renewable

As the first cannabis company to power an at-scale, indoor cultivation project with renewablesolar energy, Canndescent provides a critical template for sustainability in an industry where outdoor growers tax water resources and indoor and light dep greenhouse growers consume an estimated 1% of the electricity produced in the United States....

As the first cannabis company to power an at-scale, indoor cultivation project with renewablesolar energy, Canndescent provides a critical template for sustainability in an industry where outdoor growers tax water resources and indoor and light dep greenhouse growers consume an estimated 1% of the electricity produced in the United States....

Furthermore, it is vastly cheaper than other renewable sources like wind or solar which also require more land area. Power demand is not constant, neither is solar energy output or wind output ... With solarpower or wind, you cannot turn up the sun or force more wind to blow....

The Golden State of California has shone brightly as a solarpower pioneer in the past few years. According to Wood Mackenzie Power & Renewables, in the U.S ... Hanwha Q CELLS offers the full spectrum of photovoltaic products, applications and solutions, from cells and modules to kits to systems to large-scale solarpower plants....

According to a 2018 analysis by Environmental Progress, a Left-leaning think tank, had Germany spent $580 billion on nuclear power instead of “renewables” (wind and solar farms), Germany would now be generating 100 percent of its technology from clean energy sources....

Renewables firm Voltalia sealed a 70 million euro contract for a solarpower plant while an Airbus-led consortium won a 200 million euro deal for coastal and maritime surveillance. Total is finalizing terms on a second solar plant....

... H.3659 – States that utility customers are entitled to certain renewable options, creates a new net metering program (customer-based solar generation), and requires utilities to incorporate small renewablepower companies into their rate-making proceedings Thursday – 3/21/19....

The Company is also in the final stages of completing the necessary infrastructure to support an off-grid, renewable, energy system. With the solar equipment in place, the site’s solarpower operation will be completed in the next days ... While this biofuel can be used to power ......

Sustainable systems such as solar energy can solve the problem by introducing ecologically clean energy for mining ... One needs a great amount of computational power to mine cryptocurrency ... SolarPower Solves Bitcoin Mining Problem ... Furthermore, it also says that renewable energy powers more than 80% of mining in the world....

Additionally, and in line with its ambitious New Deal on Energy for Africa, 95 per cent of all Bank investments in power generation over the 2016-18 periods have been in renewables. The “Desert to Power” programme, a $10 billion initiative to build a 10 GW solar zone across the ......